From mboxrd@z Thu Jan 1 00:00:00 1970 From: Josh Poimboeuf Subject: [PATCH v2 00/12] x86/crypto: Fix RBP usage in several crypto .S files Date: Mon, 18 Sep 2017 14:41:59 -0500 Message-ID: Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Tim Chen , Mathias Krause , Jussi Kivilinna , Peter Zijlstra , linux-crypto@vger.kernel.org, Eric Biggers , Andy Lutomirski , Jiri Slaby To: Herbert Xu , "David S. Miller" Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org v2: - fix performance issues in sha256-avx2-asm.S and sha512-avx2-asm.S (Eric) Many of the x86 crypto functions use RBP as a temporary register. This breaks frame pointer convention, and breaks stack traces when unwinding from an interrupt in the crypto code. Convert most* of them to leave RBP alone. These pass the crypto boot tests for me. Any further testing would be appreciated! [*] There are still a few crypto files left that need fixing, but the fixes weren't trivial and nobody reported unwinder warnings about them yet, so I'm skipping them for now. Josh Poimboeuf (12): x86/crypto: Fix RBP usage in blowfish-x86_64-asm_64.S x86/crypto: Fix RBP usage in camellia-x86_64-asm_64.S x86/crypto: Fix RBP usage in cast5-avx-x86_64-asm_64.S x86/crypto: Fix RBP usage in cast6-avx-x86_64-asm_64.S x86/crypto: Fix RBP usage in des3_ede-asm_64.S x86/crypto: Fix RBP usage in sha1_avx2_x86_64_asm.S x86/crypto: Fix RBP usage in sha1_ssse3_asm.S x86/crypto: Fix RBP usage in sha256-avx-asm.S x86/crypto: Fix RBP usage in sha256-avx2-asm.S x86/crypto: Fix RBP usage in sha256-ssse3-asm.S x86/crypto: Fix RBP usage in sha512-avx2-asm.S x86/crypto: Fix RBP usage in twofish-avx-x86_64-asm_64.S arch/x86/crypto/blowfish-x86_64-asm_64.S | 48 +++++++++--------- arch/x86/crypto/camellia-x86_64-asm_64.S | 26 +++++----- arch/x86/crypto/cast5-avx-x86_64-asm_64.S | 47 +++++++++++------- arch/x86/crypto/cast6-avx-x86_64-asm_64.S | 50 +++++++++++++------ arch/x86/crypto/des3_ede-asm_64.S | 15 +++--- arch/x86/crypto/sha1_avx2_x86_64_asm.S | 4 +- arch/x86/crypto/sha1_ssse3_asm.S | 11 ++--- arch/x86/crypto/sha256-avx-asm.S | 15 +++--- arch/x86/crypto/sha256-avx2-asm.S | 22 +++------ arch/x86/crypto/sha256-ssse3-asm.S | 15 +++--- arch/x86/crypto/sha512-avx2-asm.S | 75 +++++++++++++++-------------- arch/x86/crypto/twofish-avx-x86_64-asm_64.S | 12 ++--- 12 files changed, 184 insertions(+), 156 deletions(-) -- 2.13.5